Citation: Yaqin Liu, Yan Zheng, Shaoyuan Li, Jinhan Li, Xiaoyu Du, Yanyun Ma, Guofu Liao, Qing Wang, Xiaohai Yang, Kemin Wang. Contradictory effect of gold nanoparticle-decorated molybdenum sulfide nanocomposites on amyloid-β-40 aggregation[J]. Chinese Chemical Letters, ;2020, 31(12): 3113-3116. doi: 10.1016/j.cclet.2020.04.052 shu

Contradictory effect of gold nanoparticle-decorated molybdenum sulfide nanocomposites on amyloid-β-40 aggregation

State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China

wwqq99@hnu.edu.cn

kmwang@hnu.edu.cn

Received Date: 9 February 2020
Revised Date: 26 April 2020
Accepted Date: 26 April 2020
Available Online: 15 December 2020

Figures(4)

The effect of gold nanoparticle-decorated molybdenum sulfide (AuNP-MoS₂) nanocomposites on amyloid-β-40 (Aβ₄₀) aggregation was investigated. The interesting discovery was that the effect of AuNP-MoS₂ nanocomposites on Aβ₄₀ aggregation was contradictory. Low concentration of AuNP-MoS₂ nanocomposites could enhance the nucleus formation of Aβ₄₀ peptides and accelerate Aβ₄₀ fibrils aggregation. However, although high concentration of AuNP-MoS₂ nanocomposites could enhance the nucleus formation of Aβ₄₀ peptides, it eventually inhibited Aβ₄₀ aggregation process. It might be attributed to the interaction between AuNP-MoS₂ nanocomposites and Aβ₄₀ peptides. For low concentration of AuNP-MoS₂ nanocomposites, it was acted as nuclei, resulting in the acceleration of the nucleation process. However, the structural flexibility of Aβ₄₀ peptides was limited as the concentration of AuNP-MoS₂ nanocomposites was increased, resulting in the inhibition of Aβ₄₀ aggregation. These findings suggested that AuNP-MoS₂ nanocomposites might have a great potential to design new multifunctional material for future treatment of amyloid-related diseases.
- Amyloid peptides,
- Gold nanoparticle-decorated molybdenum,
- sulfide,
- Inhibition,
- Acceleration,
- Atomic force microscopy
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